PBC算法与AAA算法在肺癌调强放疗中的剂量学比较  

Dosimetric Comparison of PBC and AAA Dose Calculation Algorithm for IMRT Treatment of Lung Cancer

作　　者：张富利[1] 王军良[2] 盛洪国[2] 郑明民[1] 

机构地区：[1]北京军区总医院放疗科,北京100700 [2]军事医学科学院附属307医院放疗科,北京100071

出　　处：《中国医学物理学杂志》2011年第3期2588-2590,共3页Chinese Journal of Medical Physics

摘　　要：目的:分析、比较笔形束卷积算法(PBC)和各向异性解析算法(AAA)在非小细胞肺癌(NSCLC)调强放疗计划设计中的剂量学差异。方法:随机选择7例NSCLC患者,采用Eclipse version 7.3.10计划系统提供的PBC算法和AAA算法对每例NSCLC进行IMRT的计划设计,比较靶区及危及器官的剂量分布、DVH等指标。结果:两种算法获得治疗计划的靶区剂量均匀性和适形度均无明显差别,食管、心脏、脊髓等危及器官的受量也基本相同。结论:对于NSCLC,剂量计算应采用受呼吸时相影响更小的AAA算法。Objective:To compare the dosimetric differences between intensity modulated radiotherapy(IMRT) plans for non-small cell lung cancer using pencil beam convolution(PBC) and anisotropic analytical algorithm(AAA) methods.Materials and Methods:For a cohort of 7 patients,IMRT plans were designed using PBC and AAA calculation methods,respectively.In the planning process,identical planning objectives and dose constraints were set.Plans were compared according to dose-volume histogram(DVH) analysis in terms of PTV h...

关 键 词：PBC算法 AAA算法 非小细胞肺癌 

分 类 号：R734.2[医药卫生—肿瘤]